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Laszlo Istvan Hunyady reassigned KAFKA-13306: --------------------------------------------- Assignee: Laszlo Istvan Hunyady (was: Andras Katona) > Null connector config value passes validation, but fails creation > ----------------------------------------------------------------- > > Key: KAFKA-13306 > URL: https://issues.apache.org/jira/browse/KAFKA-13306 > Project: Kafka > Issue Type: Bug > Components: KafkaConnect > Reporter: Laszlo Istvan Hunyady > Assignee: Laszlo Istvan Hunyady > Priority: Major > > When validating a connector config containing a property with a null value > the validation passes, but when creating a connector with the same config the > worker fails to start the connector because of an invalid config. > Steps to reproduce: > # Send PUT request to > \{\{connectRest\}\}/connector-plugins/FileStreamSource/config/validate > Request body: > {code} > { > "connector.class": "FileStreamSource", > "name": "file-source", > "topic": "target-topic", > "file":"/source.txt", > "tasks.max": "1", > "foo": null > } > {code} > Response: > {code} > { "name": "FileStreamSource", "error_count": 0, ... } > {code} > # OPTION A: > Send PUT request to > \{\{connectRest}}/connectors/file-source/config > Request body: > {code} > { > "connector.class": "FileStreamSource", > "name": "file-source", > "topic": "target-topic", > "file":"/source.txt", > "tasks.max": "1", > "foo": null > } > {code} > OPTION B: > Send POST request to > \{\{connectRest}}/connectors/ > Request Body: > {code} > { > "connector.class": "FileStreamSource", > "name": "file-source", > "topic": "target-topic", > "file":"/source.txt", > "tasks.max": "1", > "foo": null > } > {code} > Result: > Connector is created but connector fails to start, with below exception that > indicates an invalid config: > {noformat} > ERROR org.apache.kafka.connect.runtime.WorkerConnector: [file-source|worker] > WorkerConnector\{id=file-source} Error initializing connector > java.lang.ClassCastException: Non-string value found in original settings for > key foo: null > at > org.apache.kafka.common.config.AbstractConfig.originalsStrings(AbstractConfig.java:234) > at > org.apache.kafka.connect.runtime.WorkerConnector.initialize(WorkerConnector.java:77) > at > org.apache.kafka.connect.runtime.Worker.startConnector(Worker.java:256) > at > org.apache.kafka.connect.runtime.distributed.DistributedHerder.startConnector(DistributedHerder.java:1190) > at > org.apache.kafka.connect.runtime.distributed.DistributedHerder.processConnectorConfigUpdates(DistributedHerder.java:548) > at > org.apache.kafka.connect.runtime.distributed.DistributedHerder.tick(DistributedHerder.java:395) > at > org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:289) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:748) > {noformat} > -- This message was sent by Atlassian Jira (v8.3.4#803005)